Cap for miners  lamps



(ModeL) H. F. PEARCE.

GAP FOR MINERS LAMPS. No. 258,802. Patented May 30,1882.

Wzilfoea'ses N. PETERS. Pholn-Lnhcgrmpllur. Washingian. D. C.

UNrTan STATES PATENT OFFICE.

HENRY 1 PEARCE, OF HYDE PARK, PENNSYLVANIA.

CAP FOR MINERS LAMPS.

SPECIFICATION forming part of Letters Patent No. 258,802, dated May 30, 1882,

Application filed April 6, 188:2.

To all whom it may concern:

Be it known that I, H. F. PEARCE, a citizen of the United States of America, residing at Hyde Park, in the county of Lack-awanna and State of Pennsylvania, have invented certain new and useful Improvements in Gaps for Mi- 11ers Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to a cap for miners lamps; and ithas for its object the prevention of the escape of the oil through the vent and the closing of the vent by the gumming of the same by a collection of oil orsediment t-hereat.

Figure 1 is a central vertical section of a miners lamp provided with a cap constructed according to my invention, and Fig. 2 is a plan of the under or inner side of the cap.

Like letters refer to like parts in both figures.

A represents the body of the lamp, B the neck, and O the cap. The cap or cover is hinged to the body in the usual manner, the hinge being an extension of the flange c, the central portion of the cap being struck up by dies into a semi-spherical or cup shape, and is provided with a vent, c, anda flange, 0 adapted to fit the neck of the lamp snugly. Within the cap is secured a cup-shaped lining, 0 having aflange,

c disposed in a plane agreeing with that of the (Model) which may accidentally enter the chamber back into the body of the lamp.

1n the usual inclination of the head of the miner when at work with the lamp attached to his hat, as is usual, the oil is frequently and freely thrown against the cap, and it becoming heated by the blaze ofthe lamp separates the lighter properties of the oil from the heavier, and these,with the usual sediment, clog and finally close the vent, and thus obstruct the flow of oil to the wick. By my construction the oil' is conducted down the sides of the chamber and returns into the body of the lamp through the lower perforations, 0 while the upper one is open for giving vent, and, as shown, the perforations c and the vent c are not in line with each other, so that no direct contact of the oil with the vent can occur, and the body of air confined in or within the chambertends to keep the cap cooler than if not so constructed.

It is not really necessary that the lining should be cup shaped, as if fiat it would in a measure direct the oil to the annular perforations c and in like manner prevent direct access of the oil to the vent.

Having described my invention, what I claim is- As an article of manufacture, a cap for a miners lamp, having a lining arranged to form a space, (1, and having the annularly-located perforations 0 whereby none of the perforations in the lining directly communicate with the vent in the cap, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY F. PEARCE.

Witnesses:

JOHN P. HEATH, M. J. WILLIAMS. 

